All cars have to use a wear-resistant brake pad that fits tightly with the rotating part of the car and stops it with friction.
There are different ways of being rubbed, which can be divided into two categories: drum type and dish type.
To put it simply, like a bicycle, a drum-type method is to open it from the inside out and stop the rotating drum. The dish-like method is to clamp the rotating disc from both sides.
Brake power, the most primitive from the person's feet, pneumatic brakes, the foot is just a switch. Hydraulic brakes, the power is also from the person's feet, the current car has a vacuum boost, part of the power comes from people's feet, most of the power is the vacuum produced by the engine.
This is why we step on the brakes in the driving car will be softer than the stalled car, there is the role of vacuum booster, must rely on the engine to provide vacuum to help the driver brake, or else it is difficult to manually stop the running car, so If the engine stalls while the vehicle is in motion, it is very dangerous to immediately try to hit the engine again.